.bac{
    width: 100%;
    height: 100%;
}
.main{
    color: white !important;
    width: 100%;
    height: 100%;
    background:url("../../image/bg2.jpg") rgba(0,0,0,0.5)  no-repeat !important;
    background-size: cover !important;
    background-attachment: fixed !important;
}
.header{
    height: 100px;
    line-height: 100px;
    font-size: large;
}
.header .left{
    float: left;
    margin-left: 50px;
}
.header .right{
    float: right;
    margin-right: 50px;
}
.header .right .but1{
    color: white !important;
    font-size: large;
}

.content{
    height: 550px;
    background: white;
}
.footer{
    border-top: black 1px solid;
    height: 100px;
    line-height: 100px;
    display: flex;
}
.footer span{
    margin:auto auto;
}
